I've been using firefox since it's early release. My PC is set up as a DAW and I have more audio cards and usb connection that routes audio around. Now I can have my main DAW software running on my monitors via ASIO, In windows I set the it to my secondary driver. Now can open firefox, go to youtube and sound from the browser goes there. I can start the DAW and have sounds there. It worked perfectly. But now suddenly no sound in Firefox. I just starts, no errors or anything, but no sound. I had a look a some of the FAQ's but nothing changed. Reinstall etc. Well short story, Edge works, so now firefox sadly have to go. Thx for the good work. This is very good browser, but it don't work for me.